/* ==========================================================================
   PG 娱乐中心 · 共享样式 /assets/site.css
   设计语汇：深海夜航控制台 × 展览画册
   ========================================================================== */

/* ---------- 1. 变量 ---------- */
:root{
  --ink:#050F1F;
  --ink-2:#0A1B33;
  --panel:#12294A;
  --line:#1B3A63;
  --cyan:#35F0E0;
  --cyan-soft:#7FF6EA;
  --coral:#FF6A4D;
  --coral-soft:#FF9A82;
  --violet:#8A6BFF;
  --mint:#7BF1A8;
  --text:#E8F1FA;
  --muted:#9FB6CC;

  --font-display:"HarmonyOS Sans SC","Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-body:"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,sans-serif;
  --font-serif:"Noto Serif SC","Songti SC","Source Han Serif SC",Georgia,serif;
  --font-mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;

  --maxw:1240px;
  --gutter:clamp(16px,4vw,44px);
  --header-h:64px;
  --cut:18px;
  --ease:cubic-bezier(.4,0,.2,1);
}

/* ---------- 2. Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
  scroll-padding-top:calc(var(--header-h) + 18px);
}
body{
  margin:0;
  padding-top:var(--header-h);
  min-height:100vh;
  font-family:var(--font-body);
  font-size:1rem;
  line-height:1.85;
  color:var(--text);
  background-color:var(--ink);
  background-image:
    radial-gradient(1100px 620px at 8% -10%, rgba(53,240,224,.10), transparent 62%),
    radial-gradient(900px 520px at 96% 2%, rgba(138,107,255,.12), transparent 64%),
    linear-gradient(rgba(27,58,99,.30) 1px, transparent 1px),
    linear-gradient(90deg, rgba(27,58,99,.30) 1px, transparent 1px);
  background-size:auto,auto,72px 72px,72px 72px;
  overflow-x:hidden;
}
body.nav-open{overflow:hidden}
h1,h2,h3,h4,h5,h6{margin:0;font-weight:800;line-height:1.2}
p{margin:0 0 1em}
ul,ol{margin:0;padding:0}
img,svg,video{max-width:100%;display:block}
a{color:var(--cyan);text-decoration:none}
a:hover{color:var(--cyan-soft)}
button,input,select,textarea{font:inherit;color:inherit}
::selection{background:rgba(53,240,224,.28);color:#FFFFFF}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px}
[hidden]{display:none !important}

/* ---------- 3. 排版 ---------- */
.display{
  font-family:var(--font-display);
  font-weight:900;
  font-size:clamp(2.2rem,5vw,4.5rem);
  line-height:1.02;
  letter-spacing:-.02em;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  font-family:var(--font-mono);
  font-size:.74rem;font-weight:600;letter-spacing:.14em;
  color:var(--cyan);
}
.eyebrow::before{content:"";width:22px;height:1px;background:currentColor}
.lead{
  font-size:clamp(1rem,1.35vw,1.12rem);
  line-height:1.8;
  color:var(--muted);
  max-width:60ch;
}
.prose{max-width:38em}
.prose p{margin:0 0 1.1em}
.prose a{text-decoration:underline;text-underline-offset:3px}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-size:.9rem}
.muted{color:var(--muted)}
.rule{height:1px;background:var(--line);border:0;margin:0}

/* ---------- 4. 布局 ---------- */
.shell{
  width:min(var(--maxw), calc(100% - var(--gutter) * 2));
  margin-inline:auto;
}
.site-main{display:block}
.section{position:relative;padding-block:clamp(56px,8vw,104px)}
.section--alt{background:var(--ink-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section--tight{padding-block:clamp(30px,4.5vw,58px)}
.section-head{display:grid;gap:14px;max-width:72ch;margin-bottom:clamp(24px,4vw,48px)}
.section-head__index{
  font-family:var(--font-serif);font-weight:400;
  font-size:clamp(1.5rem,2.4vw,2.4rem);
  line-height:1;letter-spacing:.06em;color:var(--cyan);
}
.section-head__title{
  font-family:var(--font-display);font-weight:800;
  font-size:clamp(1.6rem,3vw,2.4rem);
  line-height:1.15;letter-spacing:-.01em;
}
.section-head__lead{color:var(--muted);max-width:58ch;margin:0}

.grid{display:grid;gap:clamp(18px,2.6vw,28px)}
.grid--halves{grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}
.grid--cards{grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}
.grid--asym{grid-template-columns:repeat(12,1fr)}
.grid--asym > *{grid-column:span 12}
@media (min-width:900px){
  .grid--asym > .col-main{grid-column:span 7}
  .grid--asym > .col-side{grid-column:span 5}
  .grid--asym > .col-wide{grid-column:span 8}
}

/* 斜向光轨装饰 */
.trail{
  position:absolute;left:-5%;right:-5%;bottom:12%;height:1px;
  background:linear-gradient(90deg,transparent,rgba(53,240,224,.55),transparent);
  transform:rotate(-6deg);opacity:.55;pointer-events:none;
  animation:drift 40s ease-in-out infinite;
}
@keyframes drift{
  0%{transform:translateX(-6%) rotate(-6deg)}
  50%{transform:translateX(6%) rotate(-6deg)}
  100%{transform:translateX(-6%) rotate(-6deg)}
}

/* ---------- 5. 切角面板 ---------- */
.panel{
  position:relative;
  padding:clamp(18px,2.4vw,28px);
  background-color:var(--panel);
  background-image:linear-gradient(45deg,transparent calc(50% - .5px),var(--line) calc(50% - .5px),var(--line) calc(50% + .5px),transparent calc(50% + .5px));
  background-repeat:no-repeat;
  background-origin:border-box;
  background-position:top right;
  background-size:var(--cut) var(--cut);
  box-shadow:inset 0 0 0 1px var(--line);
  clip-path:polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, 0 100%);
  transition:box-shadow .3s var(--ease);
}
.panel:hover{box-shadow:inset 0 0 0 1px rgba(53,240,224,.6)}
.panel--flush{padding:0}
.panel--plain{clip-path:none;background-image:none}
.panel__head{display:flex;align-items:flex-start;justify-content:space-between;gap:14px;margin-bottom:14px}
.panel__title{font-family:var(--font-display);font-weight:800;font-size:1.05rem;letter-spacing:-.005em;margin:0}
.panel__meta{font-family:var(--font-mono);font-size:.74rem;color:var(--muted);letter-spacing:.04em;white-space:nowrap}

/* ---------- 6. 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:10px 18px;
  font-size:.85rem;font-weight:600;letter-spacing:.02em;
  color:var(--text);
  background:transparent;
  border:1px solid var(--line);
  cursor:pointer;
  text-decoration:none;
  transition:background-color .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease);
}
.btn:hover{transform:translateY(-1px)}
.btn--primary{background:var(--cyan);border-color:var(--cyan);color:#04121A;font-weight:700}
.btn--primary:hover{background:var(--cyan-soft);border-color:var(--cyan-soft);color:#04121A}
.btn--ghost{background:rgba(10,27,51,.7);border-color:var(--line);color:var(--text)}
.btn--ghost:hover{border-color:var(--cyan);color:var(--cyan-soft)}
.btn--sm{padding:7px 13px;font-size:.78rem}
.btn--block{width:100%}

/* ---------- 7. 标签与状态 ---------- */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 9px;
  font-size:.7rem;font-weight:600;letter-spacing:.08em;
  color:var(--muted);
  background:rgba(10,27,51,.72);
  border:1px solid var(--line);
  white-space:nowrap;
}
.tag--cyan{color:var(--cyan);border-color:rgba(53,240,224,.45)}
.tag--coral{color:var(--coral-soft);border-color:rgba(255,106,77,.45)}
.tag--mint{color:var(--mint);border-color:rgba(123,241,168,.4)}
.tag--violet{color:var(--violet);border-color:rgba(138,107,255,.45)}

.status-pill{
  display:inline-flex;align-items:center;gap:8px;
  padding:5px 11px;
  font-size:.72rem;font-weight:600;letter-spacing:.06em;
  color:var(--muted);
  background:rgba(10,27,51,.8);
  border:1px solid var(--line);
  white-space:nowrap;
}
.status-pill__dot{
  width:7px;height:7px;border-radius:50%;
  background:var(--mint);
  box-shadow:0 0 10px var(--mint);
  animation:pulse 2.4s ease-in-out infinite;
}
@keyframes pulse{
  0%,100%{opacity:1;box-shadow:0 0 10px var(--mint)}
  50%{opacity:.45;box-shadow:0 0 2px var(--mint)}
}

/* ---------- 8. 图片容器 ---------- */
.media{
  position:relative;overflow:hidden;
  background:var(--panel);
  box-shadow:inset 0 0 0 1px var(--line);
  clip-path:polygon(0 0, calc(100% - 20px) 0, 100% 20px, 100% 100%, 0 100%);
}
.media__img{width:100%;height:100%;object-fit:cover;display:block}
.media--wide{aspect-ratio:16/9}
.media--tall{aspect-ratio:4/5}
.media--square{aspect-ratio:1/1}
.media--glow::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(120% 80% at 82% 0%, rgba(53,240,224,.22), transparent 60%);
}
.media__ph{
  position:absolute;inset:0;
  background:repeating-linear-gradient(135deg, rgba(27,58,99,.55) 0 10px, transparent 10px 20px);
}
.media__cap{
  position:absolute;left:0;right:0;bottom:0;
  padding:16px;
  font-size:.78rem;color:var(--muted);
  background:linear-gradient(180deg, transparent, rgba(5,15,31,.92));
}

/* ---------- 9. 数据表 ---------- */
.data-table__scroll{overflow-x:auto;-webkit-overflow-scrolling:touch}
.data-table{
  width:100%;min-width:560px;
  border-collapse:collapse;
  font-family:var(--font-mono);
  font-size:.85rem;
  font-variant-numeric:tabular-nums;
}
.data-table th,.data-table td{
  padding:12px 14px;
  text-align:left;
  border-bottom:1px solid var(--line);
  vertical-align:top;
}
.data-table thead th{
  font-family:var(--font-body);
  font-size:.72rem;font-weight:600;letter-spacing:.08em;
  color:var(--muted);
  background:rgba(10,27,51,.72);
  white-space:nowrap;
}
.data-table tbody tr{transition:background-color .2s var(--ease)}
.data-table tbody tr:hover{background:rgba(53,240,224,.06)}

/* ---------- 10. 面包屑 ---------- */
.breadcrumb{padding-block:18px;font-size:.8rem;color:var(--muted)}
.breadcrumb__list{display:flex;flex-wrap:wrap;align-items:center;gap:8px;list-style:none}
.breadcrumb__item{display:inline-flex;align-items:center;gap:8px}
.breadcrumb__link{color:var(--muted)}
.breadcrumb__link:hover{color:var(--cyan)}
.breadcrumb__sep{color:var(--line);opacity:.9}
.breadcrumb__current{color:var(--text)}

/* ---------- 11. 头部：紧凑命令栏 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;
  border-bottom:1px solid var(--line);
  transition:box-shadow .3s var(--ease);
}
.site-header::before{
  content:"";position:absolute;inset:0;
  background:rgba(5,15,31,.84);
  -webkit-backdrop-filter:blur(14px) saturate(1.2);
  backdrop-filter:blur(14px) saturate(1.2);
}
.site-header[data-condensed]{box-shadow:0 14px 38px rgba(2,8,18,.55)}
.site-header[data-condensed]::before{background:rgba(5,15,31,.96)}
.site-header__inner{
  position:relative;z-index:2;
  display:flex;align-items:center;
  gap:clamp(10px,1.6vw,22px);
  min-height:var(--header-h);
}
.scroll-progress{
  position:absolute;left:0;right:0;bottom:-1px;height:2px;z-index:3;
  background:linear-gradient(90deg,var(--cyan),var(--violet));
  transform:scaleX(0);transform-origin:0 50%;
  transition:transform .12s linear;
}

.skip-link{
  position:fixed;left:14px;top:-90px;z-index:120;
  padding:11px 18px;
  background:var(--cyan);color:#04121A;
  font-size:.85rem;font-weight:700;letter-spacing:.04em;
  transition:top .2s var(--ease);
}
.skip-link:focus{top:12px;color:#04121A}

.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--text)}
.brand:hover{color:var(--text)}
.brand__mark{
  width:26px;height:26px;flex:0 0 auto;
  background:linear-gradient(135deg,var(--cyan),var(--violet));
  clip-path:polygon(0 0, 100% 0, 100% 62%, 62% 100%, 0 100%);
  box-shadow:0 0 18px rgba(53,240,224,.45);
}
.brand__text{display:flex;flex-direction:column;line-height:1.16}
.brand__name{font-family:var(--font-display);font-weight:800;font-size:1rem;letter-spacing:-.01em}
.brand__sub{font-size:.68rem;color:var(--muted);letter-spacing:.02em}

.site-nav{margin-left:auto}
.site-nav__list{display:flex;align-items:center;gap:2px;list-style:none}
.site-nav__item{display:block}
.site-nav__link{
  display:inline-flex;align-items:center;gap:7px;
  padding:9px 12px;
  color:var(--muted);
  font-size:.85rem;font-weight:600;letter-spacing:.01em;
  border-bottom:2px solid transparent;
  transition:color .2s var(--ease),background-color .2s var(--ease),border-color .2s var(--ease);
}
.site-nav__link:hover{color:var(--text);background:rgba(53,240,224,.08)}
.site-nav__link[aria-current="page"]{color:var(--cyan);border-bottom-color:var(--cyan)}
.site-nav__link[aria-current="page"] .site-nav__idx{color:var(--cyan);opacity:1}
.site-nav__idx{
  font-family:var(--font-mono);font-size:.64rem;font-weight:500;letter-spacing:.04em;
  color:var(--muted);opacity:.55;transition:color .2s var(--ease),opacity .2s var(--ease);
}
.site-nav__link:hover .site-nav__idx{color:var(--cyan);opacity:.85}
.site-nav__foot{display:none;flex-direction:column;align-items:flex-start;gap:12px}

.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}

.nav-toggle{
  display:none;align-items:center;gap:9px;
  margin-left:auto;
  padding:9px 13px;
  background:rgba(18,41,74,.72);
  border:1px solid var(--line);
  color:var(--text);
  font-size:.78rem;font-weight:600;letter-spacing:.08em;
  cursor:pointer;
  transition:border-color .2s var(--ease),color .2s var(--ease);
}
.nav-toggle:hover{border-color:var(--cyan);color:var(--cyan-soft)}
.nav-toggle__bars{display:grid;gap:4px;width:18px}
.nav-toggle__bars span{display:block;height:2px;background:currentColor;transition:transform .25s var(--ease),opacity .25s var(--ease)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

.nav-scrim{
  position:fixed;inset:0;z-index:70;
  background:rgba(2,8,18,.72);
  opacity:0;pointer-events:none;
  transition:opacity .3s var(--ease);
}
.nav-scrim[data-visible]{opacity:1;pointer-events:auto}

/* ---------- 12. 页脚 ---------- */
.site-footer{
  position:relative;
  margin-top:clamp(56px,8vw,110px);
  border-top:1px solid var(--line);
  background:linear-gradient(180deg, rgba(10,27,51,.65), var(--ink) 72%);
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg, transparent, var(--cyan), transparent);
  opacity:.5;
}
.site-footer__inner{
  display:grid;grid-template-columns:1fr;
  gap:clamp(26px,4vw,52px);
  padding-block:clamp(36px,5vw,68px);
}
@media (min-width:760px){
  .site-footer__inner{grid-template-columns:1.05fr 1.95fr}
}
@media (min-width:1080px){
  .site-footer__inner{grid-template-columns:1.15fr 2fr 1.35fr}
}
.brand--footer{gap:11px}
.brand--footer .brand__mark{width:30px;height:30px}
.brand--footer .brand__name{font-size:1.05rem}
.footer-brand{display:grid;gap:14px;align-content:start}
.footer-brand__note{margin:0;max-width:32ch;font-size:.85rem;line-height:1.75;color:var(--muted)}

.site-footer__nav{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(136px,1fr));
  gap:clamp(20px,3vw,34px);
}
.footer-col__title{
  display:flex;align-items:center;gap:8px;
  margin:0 0 14px;
  font-size:.72rem;font-weight:600;letter-spacing:.14em;
  color:var(--cyan);
}
.footer-col__title::before{content:"";width:14px;height:1px;background:currentColor}
.footer-col__list{list-style:none;display:grid;gap:9px}
.footer-col__link{
  display:inline-block;
  color:var(--text);opacity:.86;font-size:.9rem;
  transition:color .2s var(--ease),opacity .2s var(--ease),padding-left .2s var(--ease);
}
.footer-col__link:hover{color:var(--cyan);opacity:1;padding-left:6px}

.footer-contact{display:grid;gap:10px;align-content:start}
.footer-contact__row{display:flex;gap:12px;margin:0;font-size:.82rem;line-height:1.7;color:var(--muted)}
.footer-contact__k{
  flex:0 0 auto;min-width:42px;
  font-family:var(--font-mono);font-size:.74rem;letter-spacing:.06em;color:var(--cyan);
}
.footer-contact__v{font-family:var(--font-mono);word-break:break-word}
.footer-contact__note{margin:2px 0 0;font-size:.76rem;line-height:1.7;color:var(--muted);opacity:.8}

.site-footer__bar{border-top:1px solid var(--line);background:rgba(4,10,20,.65)}
.site-footer__bar-inner{
  display:flex;flex-wrap:wrap;align-items:center;
  gap:8px 22px;
  padding-block:16px;
  font-family:var(--font-mono);font-size:.74rem;letter-spacing:.02em;color:var(--muted);
}
.site-footer__copy{margin:0 auto 0 0}
.site-footer__icp{margin:0}
.site-footer__domain{margin:0;opacity:.72}

/* ---------- 13. 章节目录跟随 / 返回顶部 ---------- */
.chapter-rail{position:fixed;right:18px;top:50%;transform:translateY(-50%);z-index:60;display:grid;gap:2px}
.chapter-rail__list{list-style:none;display:grid;gap:2px}
.chapter-rail__link{
  display:block;
  padding:6px 12px;
  font-family:var(--font-mono);font-size:.7rem;letter-spacing:.06em;
  color:var(--muted);
  border-right:2px solid var(--line);
  transition:color .2s var(--ease),border-color .2s var(--ease),background-color .2s var(--ease);
}
.chapter-rail__link:hover{color:var(--text);background:rgba(53,240,224,.08)}
.chapter-rail__link[aria-current="true"]{color:var(--cyan);border-right-color:var(--cyan);background:rgba(53,240,224,.08)}

.to-top{
  position:fixed;right:20px;bottom:24px;z-index:65;
  width:44px;height:44px;
  display:inline-flex;align-items:center;justify-content:center;
  background:rgba(18,41,74,.9);
  border:1px solid var(--line);
  color:var(--cyan);
  font-size:1rem;line-height:1;
  cursor:pointer;
  opacity:0;pointer-events:none;
  transition:opacity .25s var(--ease),border-color .25s var(--ease),transform .25s var(--ease);
}
.to-top[data-visible]{opacity:1;pointer-events:auto}
.to-top:hover{border-color:var(--cyan);transform:translateY(-2px)}

/* ---------- 14. 显现动效 ---------- */
.js [data-reveal]{
  opacity:0;transform:translateY(12px);
  transition:opacity .42s var(--ease),transform .42s var(--ease);
}
.js [data-reveal].is-visible{opacity:1;transform:none}

/* ---------- 15. 移动端 ---------- */
@media (max-width:1023px){
  :root{--header-h:58px}
  .brand__sub{display:none}
  .header-actions{display:none}
  .nav-toggle{display:inline-flex}

  .site-nav{
    position:fixed;top:0;right:0;bottom:0;
    width:min(86vw,360px);
    margin:0;
    display:flex;flex-direction:column;
    padding:calc(var(--header-h) + 24px) 22px 28px;
    background:linear-gradient(180deg, var(--ink-2), var(--ink));
    border-left:1px solid var(--line);
    box-shadow:-24px 0 60px rgba(2,8,18,.6);
    transform:translateX(103%);
    transition:transform .36s var(--ease);
    overflow-y:auto;
    z-index:75;
  }
  .site-nav[data-open]{transform:none}
  .site-nav__list{flex-direction:column;align-items:stretch;gap:0}
  .site-nav__link{
    padding:14px 10px;
    font-size:1rem;
    border-bottom:1px solid var(--line);
    border-left:2px solid transparent;
  }
  .site-nav__link[aria-current="page"]{
    border-bottom-color:var(--line);
    border-left-color:var(--cyan);
    background:rgba(53,240,224,.08);
  }
  .site-nav__foot{
    display:flex;
    margin-top:22px;padding-top:18px;
    border-top:1px solid var(--line);
  }

  .chapter-rail{
    left:0;right:0;bottom:0;top:auto;
    transform:none;
    display:flex;gap:8px;
    padding:9px 12px;
    overflow-x:auto;
    background:rgba(5,15,31,.94);
    border-top:1px solid var(--line);
  }
  .chapter-rail__list{display:flex;gap:8px}
  .chapter-rail__link{border-right:0;border-bottom:2px solid transparent;white-space:nowrap}
  .chapter-rail__link[aria-current="true"]{border-right:0;border-bottom-color:var(--cyan)}
  .to-top{right:14px;bottom:66px;width:40px;height:40px}
}

@media (max-width:560px){
  .site-footer__bar-inner{font-size:.7rem}
  .section{padding-block:48px}
}

/* ---------- 16. 无障碍与降级 ---------- */
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  html{scroll-behavior:auto}
  .js [data-reveal]{opacity:1;transform:none}
  .trail{animation:none}
  .status-pill__dot{animation:none}
}